EP0365464B1 - Bloc universel à canaux refroidis - Google Patents

Bloc universel à canaux refroidis Download PDF

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Publication number
EP0365464B1
EP0365464B1 EP89630188A EP89630188A EP0365464B1 EP 0365464 B1 EP0365464 B1 EP 0365464B1 EP 89630188 A EP89630188 A EP 89630188A EP 89630188 A EP89630188 A EP 89630188A EP 0365464 B1 EP0365464 B1 EP 0365464B1
Authority
EP
European Patent Office
Prior art keywords
mold
cold runner
drop holes
close
runner block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89630188A
Other languages
German (de)
English (en)
Other versions
EP0365464A2 (fr
EP0365464A3 (fr
Inventor
Norbert Majerus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goodyear Tire and Rubber Co
Original Assignee
Goodyear Tire and Rubber Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goodyear Tire and Rubber Co filed Critical Goodyear Tire and Rubber Co
Publication of EP0365464A2 publication Critical patent/EP0365464A2/fr
Publication of EP0365464A3 publication Critical patent/EP0365464A3/fr
Application granted granted Critical
Publication of EP0365464B1 publication Critical patent/EP0365464B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2701—Details not specific to hot or cold runner channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2616—Moulds having annular mould cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2725—Manifolds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/10—Thermosetting resins

Definitions

  • This invention relates to injection molding ring members having different sizes and shapes and especially tire treads.
  • JP-A-63-77724 describes a hot runner block which can be used for feeding a plurality of metal molds with resin by opening or closing the gates of the block.
  • a cylindrical segmented mold has a core and radially movable segments forming a mold cavity.
  • a container ring is movable into engagement with the segments during closing of the mold to retain the segments into position during injection and curing.
  • the segments are positioned in abutting relationship around the core with runners and gates extending from cold runner blocks to the mold cavities for injection and curing of the tread.
  • the present invention provides a universal cold runner block having drop holes at different diameters opening on nozzle runners for supplying the fluid molding material to nozzles which are connected to the gates of the mold. Close-off rods are provided to block the nozzle runners at positions adjacent the drop holes for the particular size tread mold. Close-off plugs are provided for closing drop holes for other diameter treads which open on the sections of the runners not closed off by the close-off rods.
  • FIGs 1, 2 and 3 part of an apparatus 10 for injection molding ring members such as tire treads is shown.
  • a generally cylindrical mold 12 is fastened to a top end plate 14 of the apparatus 10 which, in this case, is a tire press.
  • a core 16 is mounted on the top end plate 14.
  • Mold segments 18a and 18b shown in Figs 1 and 3, respectively, have slide blocks 20a and 20b slidably mounted on slide rods 22 for radial movement of the segments.
  • eight mold segments 20a, 20b provide a continuous segmental outer tread insert 24 which defines mold cavities 26a and 26b with the surface of the core 16.
  • Segmental mold actuating cylinders 28 are supported on brackets mounted to the top end plate 14 and connected to the mold segments 18a and 18b by piston rods 30.
  • the mold actuating cylinders 28 may be in communication with a source of fluid pressure and suitable controls for radially contracting and expanding the mold segments 20a and 20b, as desired.
  • a container ring 32 is mounted on a bottom hot plate 34 and has a tapered inner surface for engagement with tapered surfaces of the mold segments 18a, 18b.
  • the upper edge of the container ring 32 may have slots for the piston rods 30 and extends within a tapered register 36 of the top end plate 14 providing a register for seating the container ring and holding it in position during the molding process.
  • the bottom hot plate 34 is supported on a cold runner block 38 insulated from the bottom hot plate 34 by suitable insulation 40.
  • the cold runner block 38 may be supported on a vertically movable plate of the press (not shown).
  • the cold runner block 38 is a generally flat plate member having fluid passages 42 in communication with a suitable source of temperature moderating fluid such as water.
  • a central manifold 44 is provided at a central portion of the cold runner block 38 and is connected to a conduit 46 at an edge of the cold runner block by a supply runner 48 extending from the manifold to the conduit.
  • the conduit 46 may be mounted in a connecting block 50 fastened to the edge of the cold runner block 38 and positioned for engagement with a source of fluid molding material such as an injection molding machine (not shown).
  • Nozzle runners 52 in the cold runner block 38 extend from the central manifold 44 to at least one edge of the cold runner block and are in communication with drop holes 54 circumferentially spaced in the cold runner block in generally circular portions 56 and 58 having different diameters.
  • Cooled nozzles 60 are attached to the cold runner block 38 and are in communication with the drop holes 54.
  • the cooled nozzles 60 are also connected to circumferentially spaced gates 62 along at least one side of the mold cavity 26a and 26b by tapered sprues 64.
  • the fluid molding material remaining in the cooled nozzles 60 and in the nozzle runners 52 and supply runner 48 is prevented from curing.
  • the cured fluid molding material in the gates 62 and sprues 64 is removable after curing of the treads in the mold cavities 26 and 26b.
  • the mold cavity 26a is for molding a tread ring having a diameter A which corresponds with the drop holes 54 in the circular portion 56.
  • Close-off means for directing the fluid molding material from the manifold 44 to the drop holes 54 include plug members 66 and close-off rods 68.
  • the plug members 66 are mounted on the cold runner block 38 and close the drop holes 54 in the circular portion 58 between the manifold 44 and the drop holes 54 in the circular portion 56.
  • the close-off rods 68 have substantially the same diameter as the nozzle runners 52 and are slidable into the nozzle runners to a position adjacent the drop holes 54 in the circular portion 56.
  • the close-off rods 68 may have threaded portions 70 for threaded engagement with threads in the nozzle runners 52 to hold the rods in position.
  • An opening 72 may be provided in the connecting block 50 through which one of the close-off rods 68 is inserted into one of the nozzle runners 52 which leads to the connecting block.
  • the segmental molds 12 are closed by closing the tire press and applying a clamping pressure which is preferably from 600 to 1000 tons (609.62 to 1016 metric tons). Heating of the segmental molds 12 may be provided by heating passages (not shown) in communication with a suitable heating means such as steam. The molds 12 are heated to a relatively high temperature in the range from 300°F to 400°F (149°C to 204°C) and preferably to around 340°F (171°C).
  • the curing time of the ring treads in the mold cavities 26a and 26b may be from one and one-half to eight minutes, depending upon the curing properties of the injected rubber, the temperature of the segmental molds 12 and the thickness of the ring treads which may be in the range of from 12/32 to one inch (0.95 to 2.54cm).
  • Vacuum passages may be provided in the segmental mold 12 in communication with the mold cavities 26a and 26b. Also a bumping cycle may be used if required.
  • the cold runner block 38 is cooled by circulating a suitable cooling medium through the fluid passages 42 and around the nozzles 60.
  • a suitable cooling medium For example, water, which may be in the range of 160°F to 260°F (71°C to 127°C), and preferably around 220°F (104°C) at 80 psi (5.62 kg/cm2) may be used.
  • the temperature of the cold runner block 38 is maintained between 200°F and 280°F (93°C to 138°C) for optimum results.
  • the press is opened by separating the cold runner block 38 from the top end plate 14 whereupon the container ring 32 is moved away from the mold segments 18a and 18b so that the segments and the outer tread insert 24 may be pulled away from the core 16 by retracting the piston rods 30 into the mold actuating cylinders 28.
  • the tread can then be removed in a manner well known to those skilled art.
  • a modification of the cold runner block 38′ is shown in which all of the parts are identical with the parts of the cold runner block shown in Figs 1, 2 and 3 except close-off rods 76, 77 and 78 are used instead of the close-off rods 68 and 74. Also the supply runner 48 is not in the same plane as any of the nozzle runners 52′. In describing the construction of the modification shown in Figs 4 and 5, those parts, which are identical with the parts of the cold runner block 38 shown in Figs 1, 2 and 3, will be identified with the same number and a prime mark.
  • the drop holes 54′ in communication with the nozzles 60′ for molding a tread with a diameter A open on the nozzle runner 52′.
  • Adjacent the drop holes 54′ are elongated holes 80 in the cold runner block 38′ intersecting the nozzle runners 52′.
  • the close-off rods 76 are slidably inserted in the elongated holes 80 and project into the nozzle runners 52′ at positions adjacent the drop holes 54′ in the circular portion 56′.
  • Plug members 66′ are mounted on the cold runner block 38′ to block the drop holes 54′ and prevent movement of the fluid molding material through the drop holes.
  • Second elongated holes 82 are provided in the cold runner block 38′ at positions adjacent the drop hole 54′ in the circular portion 58′ and in this case the holes are filled with the close-off rods 78 which have a length terminating at the side of the nozzle passage 52′ so that the fluid molding material can flow by the plug members 66′ and the close-off rods 78 for communication with the nozzles 60′.
  • the cold runner block 38′ has the nozzles 60′ located in the circular portion 58′ for communication with the mold cavity 26b for molding tread rings having diameter B. Close-off rods 77 having a length the same as the close-off rods 76 are slidably inserted in the elongated holes 82 to block the nozzle runners 52′.
  • the operation of the apparatus 10 with the cold runner block 38′ shown in Figs 4 and 5 is substantially the same as the operation described hereinabove for the cold runner block shown in Figs 1, 2 and 3.
  • drop holes 54 and 54′ which are located in the circular portions 56, 56′, 58 and 58′ may be located in other circular portions having lesser or greater diameters. Also, additional drop holes 54 and 54′ may be added in circular portions having other diameters in a manner such as that described for the embodiments shown in the drawings.
  • the invention has been applied to circular objects such as tire molds, it is applicable to universal cold runner blocks for molding other objects. This can be accomplished by arranging the drop holes in a selected pattern in communication with nozzle runners positioned for communication with a manifold and the drop holes.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Claims (10)

  1. Bloc universel d'alimentation à froid par canal (38) destiné à un moule pour injection, pour le moulage par injection d'éléments annulaires possédant différentes formes ou dimensions, comprenant :
    (a) un élément de plaque (38);
    (b) des passages pour fluides (42) pratiqués dans ledit élément de plaque (14) pour la circulation de fluides modérant la température;
    (c) un collecteur (44) dans ledit élément de plaque (14) pour recevoir et distribuer la matière fluide de moulage;
    (d) un canal d'alimentation (48) s'étendant depuis ledit collecteur (44) jusqu'à un endroit situé à l'extérieur dudit élément de plaque (14) pour se mettre en communication avec une source de ladite matière fluide de moulage;
    (e) plusieurs trous de chute espacés (54) pratiqués dans ledit élément de plaque (14), arrangés pour être en communication avec des tuyères (60) disposées entre ledit élément de plaque (14) et les moules (12) pour lesdits éléments annulaires;
    (f) des canaux à tuyères (52) dans ledit élément de plaque (14) s'étendant depuis ledit collecteur (44) jusqu'à des positions adjacentes auxdits trous de chute (54) pour mettre en communication ladite matière fluide de moulage avec lesdites tuyères (60), chacun desdits canaux à tuyères (52) se trouvant en communication avec au moins deux desdits trous de chute (54) pour procurer une communication de ladite matière fluide de moulage à une distance différente dans lesdits canaux pour lesdits éléments annulaires;
    (g) des moyens d'obturation (66, 68, 74, 76, 77, 78) adjacents auxdits canaux à tuyères (52) pour diriger ladite matière fluide de moulage dans lesdits trous de chute (54) en communication avec lesdites tuyères (60) pour un desdits éléments annulaires.
  2. Bloc universel d'alimentation à froid par canal (38) destiné à un moule pour injection selon la revendication 1, dans lequel lesdits moyens d'obturation englobent des éléments de bouchons (66) pour venir s'insérer dans lesdits trous de chute (54) qui s'ouvrent sur lesdits canaux à tuyères (52) et qui ne se trouvent pas en communication avec lesdites tuyères (60) pour ledit élément annulaire desdits éléments annulaires.
  3. Bloc universel d'alimentation à froid par canal (38) destiné à un moule pour injection selon la revendication 1, dans lequel lesdits canaux à tuyères (52) s'étendent depuis ledit collecteur (44) jusqu'à au moins un bord dudit élément de plaque (14), et lesdits moyens d'obturation comprennent des tiges d'obturation (68, 74) mobiles pour venir se mettre dans des positions adjacentes auxdits trous de chute (54) pour obturer lesdits canaux à tuyères (52).
  4. Bloc universel d'alimentation à froid par canal (38) destiné à un moule pour injection selon la revendication 3, dans lequel lesdites tiges d'obturation (68, 74) ont essentiellement le même diamètre que celui desdits canaux à tuyères (52) et sont aptes à coulisser dans lesdits canaux à tuyères (52) depuis un bord dudit élément de plaque (14) jusqu'auxdites positions adjacentes auxdits trous de chute (54) et à des moyens (70) pour maintenir lesdites tiges d'obturation (68) dans lesdites positions.
  5. Bloc universel d'alimentation à froid par canal (38) destiné à un moule pour injection selon la revendication 3, dans lequel lesdites tiges d'obturation (76, 77, 78) sont montées en coulissement dans des trous allongés (81, 82) pratiqués dans ledit élément de plaque (38') coupant et bloquant lesdits canaux à tuyères (52') auxdites positions adjacentes auxdits trous de chute (54') et à des moyens (70) pour maintenir lesdites tiges d'obturation (76, 77, 78) dans lesdites positions.
  6. Appareil (10) pour mouler par injection des bandes de roulement de bandages pneumatiques de diamètres différents, comprenant un moule généralement cylindrique (12) comportant une cavité de moule (26A, 26B) pour une bande de roulement d'un bandage pneumatique ayant un diamètre prédéterminé, plusieurs entrées (62) dans ledit moule (12) en liaison avec ladite cavité de moule (26A, 26B), un élément de bloc d'alimentation à froid par canal (38) relié audit moule (12), un collecteur central (44) en position centrale dudit élément de bloc (38) pour recevoir et distribuer une matière fluide de moulage, un canal d'alimentation (48) s'étendant depuis ledit collecteur (44) jusqu'à un bord dudit élément de bloc d'alimentation à froid par canal (38) pour établir une communication avec une source de ladite matière fluide de moulage, caractérisé par plusieurs trous de chute (54) espacés en direction circonférentielle, pratiqués dans ledit élément de bloc d'alimentation à froid par canal (38), arrangés dans des portions généralement circulaires autour dudit collecteur (44) à différents diamètres pour établir une communication avec des tuyères (60) montées entre ledit élément de bloc (38) et ledit moule (12), lesdits trous de chute (54) étant positionnés dans lesdites portions généralement circulaires de telle sorte qu'au moins certains desdits trous de chute (54) pratiqués dans une desdites portions circulaires se trouvent en alignement avec certains desdits trous de chute (54) pratiqués dans d'autres portions desdites portions circulaires, des canaux à tuyères (52) dans ledit élément de bloc (38) s'étendant depuis ledit collecteur (44) jusqu'à un bord situé à l'extérieur dudit bloc d'alimentation à froid par canal (38) en direction radiale, chacun desdits canaux à tuyères (52) s'étendant jusqu'à des positions adjacentes auxdits trous de chute (54) pour mettre en communication ladite matière fluide de moulage avec lesdites tuyères (60), ainsi que des moyens d'obturation (66, 68, 74, 76, 77, 78) adjacents auxdits trous de chute (54) à une desdites portions circulaires pour bloquer lesdits canaux à tuyères (54) et pour diriger ladite matière fluide de moulage dans lesdits trous de chute (54) et à travers lesdites tuyères (60) en direction desdites entrées (62) dudit moule (12), lesdites tuyères (60) et ledit bloc d'alimentation à froid par canal (38) étant refroidi, par lequel ladite matière fluide de moulage subsistant dans lesdites tuyères (60) et dans ledit bloc d'alimentation à froid par canal (38) est empêchée d'être vulcanisée, si bien que ladite matière fluide de moulage vulcanisée subsistant dans ledit moule (12) peut être retirée après vulcanisation de ladite bande de roulement de bandage pneumatique.
  7. Appareil (10) selon la revendication 6, dans lequel lesdits moyens d'obturation comprennent des tiges d'obturation mobiles pour venir se mettre dans lesdites positions adjacentes auxdits trous de chute (54) pour obturer lesdits canaux à tuyères (52).
  8. Appareil (10) selon la revendication 7, dans lequel lesdites tiges d'obturation (68, 74) ont essentiellement le même diamètre que celui desdits canaux à tuyères (52) et sont aptes à coulisser dans lesdits canaux à tuyères (52) depuis un bord dudit élément de bloc (38) jusqu'auxdites positions adjacentes auxdits trous de chute (54) et à des moyens pour maintenir lesdites tiges d'obturation (68, 74) dans lesdites positions.
  9. Procédé de moulage par injection d'éléments annulaires de différentes formes et dimensions avec un bloc universel d'alimentation à froid par canal (38) possédant des passages pour fluide (42) pratiqués dans ledit bloc d'alimentation à froid par canal (38) pour la circulation d'un fluide modérant la température, un collecteur (44) dans ledit bloc d'alimentation à froid par canal (38), un canal d'alimentation (48) s'étendant depuis ledit collecteur (44) jusqu'à un endroit situé à l'extérieur dudit bloc d'alimentation à froid par canal (38), plusieurs trous de chute espacés (54) pratiqués dans ledit bloc d'alimentation à froid par canal (38), arrangés pour venir se mettre en communication avec des tuyères (60) disposées entre ledit bloc d'alimentation à froid par canal (38) et des moules (12) pour lesdits éléments annulaires, des canaux à tuyères (52) dans ledit bloc d'alimentation à froid par canal (38) s'étendant depuis ledit collecteur (44) jusqu'à des positions adjacentes auxdits trous de chute (54), comprenant le fait de :
    (a) monter un moule (12) pour un desdits éléments annulaires sur ledit bloc universel d'alimentation à froid par canal (38), au moins certaines desdites tuyères (60) se trouvant en communication avec des entrées (62) dudit moule (12);
    (b) faire circuler un fluide de modération de température à travers lesdits passages pour fluide (42) pratiqués dans ledit bloc d'alimentation à froid par canal (38); caractérisé par le fait de
    (c) bloquer lesdits canaux à tuyères (52, 52') avec des moyens d'obturation (66, 68, 74, 76, 77, 78) à des positions adjacentes auxdits trous de chute (54, 54') se trouvant en communication avec lesdites tuyères (60, 60') se trouvant en communication avec lesdites entrées (62) dudit moule (12);
    (d) mettre en communication ladite matière fluide à travers ledit canal d'alimentation (48) avec ledit collecteur (44);
    (e) mettre en communication ladite matière fluide de moulage à partir dudit collecteur (44) à travers lesdits canaux à tuyères (52) en direction desdits trous de chute (54) et desdites tuyères (60) en communication avec lesdites entrées (62) dudit moule (12) pour remplir une cavité de moule (26a) dudit moule (12);
    (f) chauffer ledit moule (12) pour vulcaniser ladite matière fluide de moulage dans lesdites tuyères (60) et dans les trous de chute (54) en communication avec lesdites entrées (62) dudit moule (12), et
    (g) ouvrir ledit moule (12) et retirer un desdits éléments annulaires.
  10. Procédé selon la revendication 9, englobant l'étape consistant à bloquer lesdits canaux à tuyères (52, 52') en insérant des tiges d'obturation (68, 74, 76, 77, 78) dans lesdits canaux à tuyères (52, 52') à des positions adjacentes auxdits trous de chute (54, 54') et auxdites tuyères (60, 60') en communication avec lesdites entrées (62) dudit moule (12).
EP89630188A 1988-10-17 1989-10-10 Bloc universel à canaux refroidis Expired - Lifetime EP0365464B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/258,385 US4980111A (en) 1988-10-17 1988-10-17 Injection molding method and apparatus using a universal cold runner block
US258385 1988-10-17

Publications (3)

Publication Number Publication Date
EP0365464A2 EP0365464A2 (fr) 1990-04-25
EP0365464A3 EP0365464A3 (fr) 1991-05-29
EP0365464B1 true EP0365464B1 (fr) 1995-07-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89630188A Expired - Lifetime EP0365464B1 (fr) 1988-10-17 1989-10-10 Bloc universel à canaux refroidis

Country Status (7)

Country Link
US (1) US4980111A (fr)
EP (1) EP0365464B1 (fr)
JP (1) JPH0521387Y2 (fr)
AU (1) AU621155B2 (fr)
CA (1) CA1317721C (fr)
DE (1) DE68923342T2 (fr)
ES (1) ES2075069T3 (fr)

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US5798127A (en) * 1995-09-15 1998-08-25 The Goodyear Tire & Rubber Company Injection molding of a tire component
US6379603B1 (en) 1997-06-09 2002-04-30 The Goodyear Tire & Rubber Company Lattice gate for injection molding of rubber compounds
FR2775214B1 (fr) * 1998-02-26 2000-05-05 Plastic Omnium Cie Procede de realisation d'une piece de carrosserie de vehicule automobile par injection d'une matiere plastique, procede d'injection sequentielle de matiere plastique, moule utilise et piece obtenue
US6419476B1 (en) * 1998-08-25 2002-07-16 Joseph P. Ouellette Thermally insulated runner manifold and injection nozzle construction for plastic molding apparatus
SE524038C2 (sv) * 2001-10-10 2004-06-15 Nolato Ab Metod och aggregat för formsprutning samt verktyg ingående i detta aggregat, och användning av detta formsprutningsaggregat för framställning av mobiltelefonkomponenter
JP2008508122A (ja) * 2004-07-28 2008-03-21 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー 封入金型アセンブリおよび交換可能カートリッジ
CN109648888B (zh) * 2018-12-27 2021-09-10 中国航空工业集团公司基础技术研究院 一种复合材料空腔盒段液态成型方法

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DE2938832A1 (de) * 1979-09-26 1981-04-09 EWIKON Entwicklung und Konstruktion GmbH & Co KG, 4900 Herford Vorrichtung mit einem heisskanalsystem zum zufuehren einer kunststoffschmelze zu einer spritzgussform
JPS57178721A (en) * 1981-04-27 1982-11-04 Yoshida Kogyo Kk <Ykk> Automatic regulation of molded length at injection molding
US4416604A (en) * 1981-06-01 1983-11-22 Associated Enterprises, Inc. Universal molding system and method
CH653286A5 (en) * 1981-07-22 1985-12-31 Apparate & Werkzeugbau Ag Multi-cavity injection mould
FR2542252B1 (fr) * 1983-03-10 1985-08-16 Capy Gilbert Procede et dispositif pour injecter de la matiere plastique dans un moule a plusieurs empreintes
US4500279A (en) * 1983-07-06 1985-02-19 Kona Corporation Heat pipe manifold system
JPS6377724A (ja) * 1986-09-20 1988-04-07 Nissei Plastics Ind Co 射出成形機
US4826416A (en) * 1988-06-02 1989-05-02 The Goodyear Tire & Rubber Company System for injection molding tire treads

Also Published As

Publication number Publication date
AU621155B2 (en) 1992-03-05
AU4292489A (en) 1990-04-26
US4980111A (en) 1990-12-25
JPH0254518U (fr) 1990-04-19
JPH0521387Y2 (fr) 1993-06-01
EP0365464A2 (fr) 1990-04-25
ES2075069T3 (es) 1995-10-01
EP0365464A3 (fr) 1991-05-29
DE68923342T2 (de) 1996-03-07
DE68923342D1 (de) 1995-08-10
CA1317721C (fr) 1993-05-18

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